Retrieving carriage for span brackets



March 21, 1950 w. e. MILNE RETRIEVING CARRIAGE FOR SPAN BRACKETS Filed 001;. 23, 1948 ATTOR N EY Fatentecl Mar. 21, 1950 nnrmnvnvo. caanrnen FOR SPAN annckars Winford Gladstone Milne Hamilton, Ontario,

Canada, assignor to N. Slater Company Limited, Hamilton, Ontario, Canada Application'October 23, 1948, Serial No. 56,230

This invention relates to retrieving carriages for transposition brackets as quite commonly used for transposing the conductors used in communication or carrier current circuits. $uch brackets areusually positioned somewhere between a pair of poles or towers and may be lo-- cated in desired position by looping a rope through or around the bracket and pulling it along the conductor wires to the desired point "af ter which the rope is unroved by letting loose of one side of the loop and pulling on the other. The transposition'bracket will now be in such a place as to render it difiicult, if not impossible, to rere'eve the rope.

It is the principal object of the present invention'to provide a novel retrieving device capable ofbeing placed on and drawn along the wires carrying the transposition bracket to engage and move the latter. v

' A second important object of the invention is to provide a novel retriever carriage having a tilting hook engageable with the disengageable from a transposition bracket when both the bracket and the carriage are supported on the same pair of wires.

A third important object of the invention is to provide a novel form of retrieving carriage having a tilting hook wherein the carriage is adapted to be supported on a pair of wires and drawn therealong and wherein the hook is moved into position of engagement with a transposition bracket on said'wires upon the carriage being drawn in one direction along said wires.

With the above and other objects in view, as will be presently apparent, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly claimed.

In the accompanying drawings like characters of reference indicate like parts in the several views, and:

Fig. 1 is a plan view of the invention.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a section on the line 33 of Fig. 2 and showing the retrieving hook in one position.

Fig. 4 is a section similar to Fig. 3 but showing the retrieving hook in a second position.

In the embodiment of the invention as herein disclosed there is provided a substantially rec-- tangular frame having parallel side bars it which are connected at the front end by a front cross bar I I and at the rear end by a rear cross bar it. At the junction of the side bars with the front and rear bars are inverted U-shaped guide mem- 6 Claims. (C1. 254-124) bers it each of which has a somewhat flared mouth i l so that these guide members may rest and readily slide along the wires W.

Depending from the front bar ii at the center thereof is a pair of spaced ears i5 wherethrough passes a pin it. On the pin it is mounted a tilting member ll so slotted as at l8 as to form a generally link like structure having an upper longitudinai side l9 and alower longitudinal side it. The front ends of the upper and lower sides are straight as can clearly be seen by reference to- Figs. 3 and 4, while the rear ends of the sides is and 2% are curved from their junction with the straight portions rearwardly and upwardly as can also be seen by Figs. 3 and 4. The upper side it is extended as at 2| to form an upwardly extending and rearwardly bent hook and at the junction of the straight and curved portions of the upper member l9 there is provided a boss 22 wherethrough passes the pin l6 so that the hook member it may rock on this pin. From the boss 22 there extends upwardly a pair of spaced stop members 23 which are adapted to engage a fixed stop 25 extending between the upper portions of the ears i5. Slideable in the slot I8 is a link 25 and this link has, in operation, a rope or cable attached thereto. When the tilting member I! is in the position shown in Fig. 3 the link 25 will be in position to draw the carriage forwardly along the wires W until the hook portion 2| is in position for engagement with a portion of the span transposition bracket shown in broken lines at B in Fig. 4. When this position has been attained the rope or cable 26 will be shifted until it inclines toward thejpole to which it is desired to bring the span transposition bracket. The shifting in this manner, as shown in Fig. 4, will cause the hook 2| to swing upwards and engage a transverse portion of the bracket B and a continuous pull on the cable 26 in the direction indicated in Fig. 4 will then cause the transposition bracket to move along with the retrieving carriage until it has reached a position enabling the linesman to operate on such transposition bracket, the linesman being at the top of a pole.

Then the retrieving hook may be detached from the transposition bracket and if desired may be carried to the pole from the direction in which movement of the transposition bracket has been affected by what has just been described. When placed in this relation to the transposition bracket the retrieving carriage may again be drawn toward the bracket with the link 25 near the hook 2! until engagement can again be 3 affected between the hook and transposition bracket whereupon shifting as before of the link away from the hook would cause engagement of the hook so that the carriage and bracket may be pulled out to the same position as before or any other position desired.

In some instances it may be found desirable to line the members 13 with insulation so that the now of current between the two wires W will be prevented.

What is claimed is:

l. A transposition bracket retrieving carriage including a frame, means to support said frame on a pair of wires, a tilting hook mounted on said frame said hook being provided with a downwardly curved slot extending from end to end thereof, and means to draw said carriage in either direction along said wires and to simultaneously effect tilting of the hook between bracket engaging and disengaging positions said means including a link slidable from end to end of said slot and a draw line attached to said link and effecting movement of the link from end to end of the slot and thereby tilting of the tilting member.

2. A transposition bracket retrieving carriage including a frame, means to support said frame on a pair of wires, a tilting hook mounted on said frame said hook being provided with a downwardly curved slot extending from end to end thereof, means to draw said carriage in either direction along said wires and to simultaneously effect tilting of the hook between bracket engaging and disengaging positions said means including a link slidable from end to end of said slot and a draw line attached to said link and effecting movement of the link from end to end of the slot and thereby tilting of the tilting member, and means to limit tilting movement of said hook.

3. A transposition bracket retrieving carriage including a rectangular frame having a transversely extending front bar, wire riding elements at the corners of said frame, a pair of spaced ears projecting downwardly from said front bar, a pivot pin extending between said ears, a tilting member pivoted on said pivot said hook being provided with a downwardly curved slot extending from end to end thereof, a bracket engaging hook at the front end of the tilting member, and means to draw said carriage along the wires on which it rides and to simultaneously effect tilting of said member and cause said hook to move between bracket engaging and disengaging positions said means including a link slidable from end to end of said slot and a draw line attached to said link and effecting movement of the link from end to end of the slot and thereby tilting of the tilting member.

4. A transposition bracket retrieving carriage including a rectangular frame having a transversely extending front bar, wire riding elements at the corners of said frame, a pair of spaced ears projecting downwardly from said front bar, a pivot pin extending between said ears, a tilting member pivoted on said pivot said hook being provided with a downwardly curved slot extending from end to end thereof, a bracket engaging hook at the front end of the tilting member, means to draw said carriage along the wires on which it rides and to simultaneously effect tilting of said member and cause said hook to move between bracket engaging and disengaging positions said means including a link slidable from end to end of said slot and a draw line attached to said link and effecting movement of the link from end to end of the slot and thereby tilting of the tilting member, and means to limit tilting movement of said hook.

5. A transposition bracket retrieving carriage including a rectangular frame having a transversely extending front bar, wire riding elements at the corners of said frame, a pair of spaced ears projecting downwardly from said front bar, a pivot pin extending between said ears, a tilting member pivoted on said pivot said hook being provided with a downwardly curved slot extending from end to end thereof, a bracket engaging hook at the front end of the tilting member, said tilting member having a longitudinal slot therein, and a rope engaging link engaging in and slidable from end to end of said slot.

6. A transposition bracket retrieving carriage including a rectangular frame having a transversely extending front bar, wire riding elements at the corners of said frame, a pair of spaced ears projecting downwardly from said front bar, a pivot pin extending between said cars, a tilting member pivoted on said pivot said hook being provided with a downwardly curved slot extending from end to end thereof, a bracket engaging hook at the front end of the tilting member, said tilting member having a longitudinal slot therein,

5 a rope engaging link engaging in and slidable Name Date Harris Nov. 7, 1905 Number 

